Sighting-telescope for arms and arm with sighting-telescope.



H. JACOB. l 81eme TBLBsoorB ron .ums VAND um wrm summa Tmzsoorn.

AYPLIOATIOI IILBD JULY 22,1907- l 907.366. Pateed Dec. 22, 1908.

UNITED STATES PATENT OFFICE.

HElNRICH JACOB, OF STEGLITZ, NEAR BERLIN, GERMANY, ASSIGNOR TO THE FIRM OF OPTISCHE ANSTALT C. P. GOERZ AKTIENGESELLSCHAFT, OF FRIEDENAU, NEARy BERLIN GERMANY SIGzHTNG-TELESCPE FOR ARMS AND ARM 'WITH SGHTING-TELESCOPE.

No. oc7,eee.

Specification of Letters Patent..

Patented Dec. 22, 1908.

Application filed July 22,*l90. Serial N o. 385,062.

ringfielescopes for Arms and in Arms with Siglitingl`elescopes, of which the following is a specilication.

My present invention relate's to sighting telescopes for arms, especially small arms, more particularly for arms which have at the rear end of the barrel a closing device which must, for the insertion of a fresh cartridge or the like, be so moved that it protrudes above the barrel, and for arms in which the insertion of the cartridges or cartridge-clip is effected from above. In small-arms of this kind the attachment of ordinary sighting telescopes is attended with dil'liculties owing to thefact that the telesco e must either be placed at a comparative y long distance from the barrel, ini order to leave room for the breech to be opened, or the telescope must be made detachable so that it can bel I entirely removed from the fire-arm for the purpose of loading. The present invention obviates these disadvantages by -mounting the ocular lens or lenses and the objective in separate parts of the telesco e; care however being taken that the com ination of the optical eements forms a true telescopical system, that is to say an optical system of sucha kind that parallel rays of light which `enter the system also leave the system substantially parrallel to each other, wherein the image reversal of the objective is compensated by a reversing system so that the sight can be arranged substantially in a focal plane, as in known sighting telesco es carrying the optical elements in one sing e tubular member. The telesco e is so designed that the distance between t e ocular and the objective is sufficient for the assage of the cartridge or cartridges, and t e separate members of the telescope are so mounted on the fire-arm that there is a gap between them which enables the fire-arm to be loaded.

To prevent the entrance of dust into the interior of the separate telescope members, and to allowof easy cleaning of the outwardly directed o tical elements of the telescope, it is desira le to close the ends of the telescope members eitherA` by means of the lenses mounted therein or vby transparent plates.

l Since sighting telescopes of the kind in d question are preferably so constructed that the .eye of the observer must be kept remote from the eye-piece of the telescope, `the disadvantage .is liable to be felt thatthe eye of the user is dazzled by light-rays falling thereinto when it is moved out of the zone of the.

field of vision. T6 obvate this disadvantage a screen or screens may be provided,

having an aperture or apertures the axis of which coincides with the optical axis, and so arranged that the ocular produces an image thereof which surrounds the pupil in the form of a dark surface. l

A construction embodying the inventionis illustrated in theannexed drawing, in which Figure l isa central longitudinal sectionof the telescope; Fig. 2 shows the telescope mounted on a fire-arm, and Fig. 3 illustrates the effect produced by the screen.

The two disconnected parts of the instrument are marked' a and b respectively. The v parte contains the reversing systeme and the objective d of the telescope, and the part b contains the ocular e. The tube ofthe part a is closed at one end by the objective d and at the other end by that lens of the reversing system c which is farthest removed from the objective. The tube of the part b is closed vat one end by a lens ofthe ocular e and at the other end by a glass platefwith parallel surfaces. The parte is provided with feet g, and the tube partb has a Vfoot h. The tube part a is provided, atI the end nearest .the ocular part, with an-annular flange fi, the image of which, produced by the ocular e, surrounds the pupil 7c in the forni of an annu-- lar .surface Z. o designates a sight which is arranged in a focal plane of the instrument.

In Fig. 2, showing the combination of the telescope with a fire-arm, the telescope parts are marked in the saine manner as in Fig. l. The fire-arm is marked m; Above the breech-block n there is a gap between the disconnected telescope members, so that however near the sighting telescope is placed to the :fire-arm, the ap between the two telescope parts a, b' aows cartridges to be inserted into the breech, or cartridge clips into the magazine, provided the members of the sighting telescope are attached to the fire-arm at the proper places.

ico

. For the purposes of the' invention it is only essential that the si hting telescope provided with'all elements 0 ,a true telescopic system with a sight positioned substantially in a focal plane comprises two separate parts so disconnected from each other that 'when the'.

Having now particularly described and as' certained the nature of my said invention and in what manner the s arne is to be performed, I declare that what I claim is:--

1. A sighting telescope for arms comprising anobjective, an image reversing system, an ocular and a sight substantially in a focal plane of the telescope, said elements being mounted in at least two disconnected telescope members in such a manner that same form a true telescopical system.

2. A -sighting telescope for arms comprising an objective, an image reversing system, an ocular and a sight substantially in a focal plane of the telescope, said elements being` 1. Vmounted in at least two disconnected tubu lar telesco e members, one of said) tubularl members ifl'erent' from the ocular carrying tube being provided with a projecting flange like part.

3. An arm having a sighting telescope mounted thereon7 said sighting telescope comprising an objective, an image reversing system and an ocular forming together a true telescopical system, and a sight arranged substantially in a focal plane of said telescopical system, said elements of the telescope being mounted in at least two discon.

nected tubular members provided on the arm in such'a manner that a gap is formed above the breech or cartridge magazine of the arm between the ocular carrying member on the one hand on the objective and image reversing system carrying members on the other hand.

In testimony whereof I have signed this' speci'cation in the presence of two subscribing witnesses.

' HEINRICH JACOB.

Witnesses HENRY HAsPnR, WoLDEM-AR HAUPT. 

